RCO-A2A - Record of Cleared Orders
The signed receipt of one cleared decision, read by decision id: RCO, the Record of Cleared Orders
我該用這個嗎
品質與安全性
A
發現項目（1）
- LOWTool 'write_receipt' description lacks action verb在 write_receipt 中
根據工具定義與協定合規性的自動化分析。
上下文成本
~1,707Token（工具定義）
~8.6 KB典型回應大小
中等的注意力影響（128k 上下文的 1.33%）
這是每次將伺服器的工具載入模型上下文時所消耗的約略 token 數量。數量越高，可用於其他工作的注意力就越少。
安裝
一鍵安裝
將以下內容加入你的 `claude_desktop_config.json` 檔案：
{
"mcpServers": {
"rco-a2a": {
"url": "https://mcp.rco-a2a.ai/mcp"
}
}
}遠端端點
https://mcp.rco-a2a.ai/mcpstreamable-http它能做什麼
工具清單
工具（2）
🟢 唯讀🟡 寫入🔴 刪除⚪ 未知
🟢get_receipt(decision_id)
RCO, the Record of Cleared Orders: the signed receipt of one cleared decision, by decision_id — what was cleared (a GTIN, an ISIN, a product id), for which actor class, under which rule and version, the records read, the signal, when, the issuing door, its signature and the ledger transaction id. Anyone, no account. No caller data, no PII, no amounts.
輸入結構描述
{
"type": "object",
"properties": {
"decision_id": {
"type": "string",
"pattern": "^(gate|dec)_[a-f0-9]{16,40}$"
}
},
"required": [
"decision_id"
]
}輸出結構描述
{
"type": "object",
"properties": {
"decision_id": {
"type": "string"
},
"hub": {
"type": "string",
"enum": [
"a2a-grocery",
"a2a-cosmetics",
"a2a-peptides"
]
},
"gtin": {
"type": "string",
"pattern": "^[0-9]{14}$"
},
"market": {
"type": "string",
"pattern": "^[A-Z]{2}$"
},
"actor_class": {
"type": "string",
"description": "for which actor class (never a person)"
},
"result": {
"type": "string"
},
"reason_code": {
"type": "string"
},
"rule_set": {
"type": "object",
"required": [
"id"
],
"properties": {
"id": {
"type": "string"
},
"version": {
"type": [
"string",
"null"
]
}
}
},
"record": {
"type": [
"object",
"null"
],
"description": "the gtinfetch answer the decision read: source_page, fetch_date, status, kid",
"properties": {
"source_page": {
"type": [
"string",
"null"
]
},
"fetch_date": {
"type": [
"string",
"null"
]
},
"status": {
"type": [
"string",
"null"
]
},
"kid": {
"type": [
"string",
"null"
]
}
}
},
"decided_at": {
"type": "string"
},
"hub_signature": {
"type": [
"object",
"null"
],
"description": "the hub's detached JWS over the receipt (keys sorted, compact JSON), verified against the hub keyring",
"properties": {
"alg": {
"type": "string"
},
"kid": {
"type": "string"
},
"jws": {
"type": "string"
}
}
},
"object": {
"type": "object",
"required": [
"type",
"id"
],
"description": "what was cleared: a GTIN, an ISIN, a product id",
"properties": {
"type": {
"type": "string",
"enum": [
"isin",
"ticker",
"lei",
"cmr",
"gtin",
"product",
"identifier"
]
},
"id": {
"type": "string"
}
}
},
"rule": {
"type": "object",
"required": [
"id",
"version"
],
"description": "the rule object and version the decision was made under",
"properties": {
"id": {
"type": "string"
},
"version": {
"type": "string"
}
}
},
"records_read": {
"type": "array",
"description": "the records read, each with its signature (or null where the record carries none)",
"items": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"as_of": {
"type": [
"string",
"null"
]
},
"sha256": {
"type": [
"string",
"null"
]
},
"signature": {
"type": [
"object",
"null"
]
}
}
}
},
"signal": {
"type": "string",
"pattern": "^ACM-(000|200|300|403|404|451|500)$"
},
"issuing_door": {
"type": "string"
},
"signature": {
"type": "object",
"description": "the issuing door's detached JWS (EdDSA) over the receipt's canonical JSON (keys sorted, compact) without signature, signature_check, ledger, receipt_url, page",
"properties": {
"alg": {
"type": "string"
},
"kid": {
"type": "string"
},
"jws": {
"type": "string"
},
"keyring": {
"type": "string"
}
}
},
"ledger": {
"type": "object",
"properties": {
"host": {
"type": "string"
},
"transaction_id": {
"type": "string"
},
"hash": {
"type": "string"
}
}
}
},
"required": [
"decision_id",
"ledger"
],
"additionalProperties": true
}🟡write_receipt(receipt)
Authorised doors only: x-door-key (a key issued by the office; the door receipt of plan v1.1 §2.6, signed by the issuing door) or x-hub-key (a GSC hub gate receipt). The hash goes on the Confidential Ledger; the receipt is kept and served by decision_id. Idempotent on decision_id.
輸入結構描述
{
"type": "object",
"properties": {
"receipt": {
"type": "object",
"description": "a door receipt (dec_ id, x-door-key) or a hub receipt (gate_ id, x-hub-key)",
"anyOf": [
{
"type": "object",
"required": [
"decision_id",
"object",
"actor_class",
"rule",
"records_read",
"signal",
"decided_at",
"issuing_door",
"signature"
],
"properties": {
"decision_id": {
"type": "string",
"pattern": "^dec_[a-f0-9]{16,40}$",
"description": "the id the issuing door gave the decision"
},
"object": {
"type": "object",
"required": [
"type",
"id"
],
"description": "what was cleared: a GTIN, an ISIN, a product id",
"properties": {
"type": {
"type": "string",
"enum": [
"isin",
"ticker",
"lei",
"cmr",
"gtin",
"product",
"identifier"
]
},
"id": {
"type": "string"
}
}
},
"actor_class": {
"type": "string",
"description": "for which actor class (never a person)"
},
"rule": {
"type": "object",
"required": [
"id",
"version"
],
"description": "the rule object and version the decision was made under",
"properties": {
"id": {
"type": "string"
},
"version": {
"type": "string"
}
}
},
"records_read": {
"type": "array",
"description": "the records read, each with its signature (or null where the record carries none)",
"items": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"as_of": {
"type": [
"string",
"null"
]
},
"sha256": {
"type": [
"string",
"null"
]
},
"signature": {
"type": [
"object",
"null"
]
}
}
}
},
"signal": {
"type": "string",
"pattern": "^ACM-(000|200|300|403|404|451|500)$"
},
"decided_at": {
"type": "string"
},
"issuing_door": {
"type": "string"
},
"signature": {
"type": "object",
"description": "the issuing door's detached JWS (EdDSA) over the receipt's canonical JSON (keys sorted, compact) without signature, signature_check, ledger, receipt_url, page",
"properties": {
"alg": {
"type": "string"
},
"kid": {
"type": "string"
},
"jws": {
"type": "string"
},
"keyring": {
"type": "string"
}
}
}
}
},
{
"type": "object",
"required": [
"decision_id",
"hub",
"gtin",
"market",
"actor_class",
"result",
"reason_code",
"rule_set",
"decided_at"
],
"properties": {
"decision_id": {
"type": "string",
"pattern": "^gate_[a-f0-9]{16,40}$",
"description": "the hub gate decision id"
},
"hub": {
"type": "string",
"enum": [
"a2a-grocery",
"a2a-cosmetics",
"a2a-peptides"
]
},
"gtin": {
"type": "string",
"pattern": "^[0-9]{14}$"
},
"market": {
"type": "string",
"pattern": "^[A-Z]{2}$"
},
"actor_class": {
"type": "string"
},
"result": {
"type": "string"
},
"reason_code": {
"type": "string"
},
"rule_set": {
"type": "object",
"required": [
"id"
],
"properties": {
"id": {
"type": "string"
},
"version": {
"type": [
"string",
"null"
]
}
}
},
"record": {
"type": [
"object",
"null"
],
"description": "the gtinfetch answer the decision read: source_page, fetch_date, status, kid",
"properties": {
"source_page": {
"type": [
"string",
"null"
]
},
"fetch_date": {
"type": [
"string",
"null"
]
},
"status": {
"type": [
"string",
"null"
]
},
"kid": {
"type": [
"string",
"null"
]
}
}
},
"decided_at": {
"type": "string"
},
"hub_signature": {
"type": [
"object",
"null"
],
"description": "the hub's detached JWS over the receipt (keys sorted, compact JSON), verified against the hub keyring",
"properties": {
"alg": {
"type": "string"
},
"kid": {
"type": "string"
},
"jws": {
"type": "string"
}
}
}
}
}
]
}
},
"required": [
"receipt"
]
}輸出結構描述
{
"type": "object",
"properties": {
"written": {
"type": "boolean"
},
"idempotent": {
"type": "boolean"
},
"decision_id": {
"type": "string"
},
"receipt_url": {
"type": "string"
},
"page": {
"type": "string"
},
"ledger": {
"type": "object"
}
},
"required": [
"written",
"decision_id",
"receipt_url",
"ledger"
],
"additionalProperties": true
}社群
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